Does Hr Frosting Fix Air Bulges??

I've been trying to fix an air bulging issue that is messing up my buttercream cakes....you know, the bump that splits and cracks! its even happening under fondant and causing it to crack, which is impossible to repair.

i've read that HR frosting (though I don't have a recipe yet) will fix this issue. anyone else have any luck with that?????? I don't want to change our way of doing things for nothing!